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Web Application Security Defense 100 TechnologyHow to defend against web Application Security is a question that every web security practitioner may ask. It is very difficult to answer. It is easy to be too superficial or theoretical. To clarify clearly, the answer is the length of a book. This article will introduce a good book that can easily answer this question-web application defender's cookbook, which is an underestimating "dry goods" book. Alth

The United States DP High-protection room, high anti-high anti-server, can effectively protect against DDoS and CC attacks. The 21st century is the era of computer network, with the rapid development of the network era, network attacks are also gradually raging, network security issues become the majority of the webmaster's heart, have a anti-attack server is imperative.Now our common attacks are generally DDoS attacks and CC attacks, DDoS attacks are very harmful, it is the use of a group of co

layers becomes the top priority, to regularly carry out Web program vulnerability scanning, after the discovery of timely notification of personnel repair, for the financial industry is necessary to invite third parties to conduct regular penetration testing.Vi. Common Security SitesCloud BUG: http://www.wooyun.orgBox Vulnerability: https://www.vulbox.comNational information Security vulnerability Platform: http://www.cnvd.org.cnFreebuf:http://www.freebuf.comStackoverflow:http://stackoverflow.c

Enterprise Linux security System protection is divided into four steps:1, file system security maintenance;2, process security protection;3, user security management;4, log security statistics;1. File system security:Setgit and setuid have raised the user rights and need to be aware of the file system setting sticky bits:Find/-perm +6000-type f-exec ls-ld {} \; > Setuid.txtUse the file System Consistency Checker: Tripwire.This article is from the "Thousand Face" blog, please make sure to keep th

"established"1.2, judge some abnormal connection, through the PID to find the process name, stop the processPs-ef | grep "3249"Kill-9 Process Number1.3. Find the source file by name, delete itFind/-name "XXXX"2, clear the backdoor (in the following file may appear the relevant command, find it, and delete)2.1,/etc/rc.local2.2,/crontab-l2.3,/ROOT/.BASHRC ordinary users under the. BASHRC2.4,/etc/profile Backup profile file diff Profile.bak whether there are differentThis article is from the "Crys

This article mainly describes the PHP implementation of the CC attack defense and prevent the Quick Refresh page example, the need for friends can refer to theThe code is as follows:

. Users often ignore their passwords, and password policies are difficult to implement. Hackers have a variety of tools to defeat the technology and socially protected passwords. Mainly include: Dictionary attack (Dictionary attack), mixed attack (Hybrid attack), brute force attack (brute force). Once the hacker has the user's password, he has a lot of user privileges. Password conjecture refers to the manual access to the ordinary password or by the preparation of the original program to obtain

Professor Wang's teaching summary:Nginx Reverse Proxy Parsing VulnerabilityRedis is not authorized to accessDNS Domain Transfer VulnerabilityRsync exploits?SSH password-free login?Zmap Nmap Scan to filter? MasscanHydra Password BlastingTHEHAVERSC Information CollectionBlasting and principle of weak passwordThere are some other scanning toolsKali Agent Method (intranet infiltration)Nessus Baseline ScanLinux HardeningWindows HardeningApache Prevents directory traversalTomcat-Second, DNS domain del

Publisher: Wizard Patch name: Spam Reference Defense patch Release time: 2007-1-4 Version number: 3rd Edition Applicable version: Pjblog 2.6 Original Author: Wizard Demo Address: http://www.hljsh.com/ Download Address: http://bbs.pjhome.net/attachment.php?aid=2143 Introduction to Plug-ins: can effectively prevent garbage references. Encrypted submit address, 2nd edition to add key verification, and automatically replace key every hour. This version do

requests from trusted users. Attack ModeCSRF attacks rely on the following assumptions:The attacker knows the site where the victim is locatedThe attacker's target site has a persistent authorization cookie or the victim has the current session cookieThe target site does not have a second authorization for the user's behavior on the site defensiveGenerally through the form token, verification code, Referer check and other ways to avoid CSRF iv. Error-EchoThe general server defaults to turn on

Defense principleThe principle of DDoS deflate is to use the netstat command to find a single IP that emits an excessive amount of connectivity and to reject the IP using the iptables firewall. Because the iptables firewall is far more efficient than the Apache-level connection, the iptables becomes the "filter" that runs on the Apache front end. Similarly, DDoS deflate can also be set up to use APF (advanced firewall) for IP blocking. How do I deter

gradually rise to 100%, and then crash panic; When the above cycle is reduced to about 500, the CPU utilization rate gradually increased to 100%, again instantaneous restore to a stable state, memory use from about 130M up to 230M, and open the 192.168.56.106/12.html this page, The link inside the address bar also becomes: http://192.168.56.106/0123456789101112131415161718192021 ... 494495496497498499 As you can see, as you add new records to the history stack by looping, the page will refres

". China" domain name August Global registration tide launched brand defense Since August, netizens can visit relevant websites simply by entering simplified "Chinese. China" in the browser address bar. Billions of of the world's Internet users use Chinese in any region of the globe, as long as they enter Chinese in the IE Address bar. China, you can get to the Web page you want to visit directly. Since June this year, the Chinese domain name has be